What is a Geochron?

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The Geochron allows any observer to determine what time it is anywhere in the world. Physically the Geochron looks like a framed world map, about 2x3 ft. in size.

The colorful map itself is an endless belt that is driven slowly from left to right by an electric clock motor in synchronism with the rotation of the earth.

All known legal time zone boundaries are delineated on the map by dark blue lines which in most cases, converge on lettered pointers on the top edge of the map.

These letters identify the standard time zones and also represent the short wave radio prefix for that zone.

Specifically the Geochron displays (click for diagram);

• Legal time zones
• Greenwich Mean time
• Greenwich Apparent time
• Local Apparent time
• Moment of sunrise
• Moment of sunset
• Duration of daylight
• Sun's meridian passage
• Sun's equation of time
• Degrees of latititude and longitude

Models

There are three basic models of the Geochron World Clock: the Standard model, Original Kilburg model and Boardroom model. Each model has slightly different features, though functionality is almost exactly the same. The only difference in functionality is that the the Original Kilburg and Boardroom models include a minute analog dial in the top right hand corner of the front panel, and the Standard model does not. This dial allows for more accurate time keeping because it displays the exact minute after the hour and runs in unison with the map.

Aesthetically is where the major differences are. Upgrade panels are not available on Standard model units whereas the Boardroom models feature a special "cove molding" on their natural wood front panels. Please click the buttons in the menu on left to learn more.